topic Re: Bug Report: In MQX 4.1 _io_mfs_read & _io_mfs_write do not advance the file location in MQX Software Solutions

Bug Report: In MQX 4.1 _io_mfs_read & _io_mfs_write do not advance the file location

chrissolomon — Wed, 17 Sep 2014 04:45:18 GMT

Hi,

I believe I have found a bug in MFS (shipped with MQX 4.1.0.1).

In MFS shipped with MQX 4.0.1 the call to MFS_Read and MFS_Write is made with the file pointer, and the location is advanced as it should be.

In MFS shipped with MQX 4.1.0.1 the call to MFS_Read and MFS_Write is made using the MFS_HANDLE pointer, which contains a different location (which is updated), but the location in the file pointer is not.

This breaks the ftell functionality.

Proposed fix:

Add the following line of code:

file_ptr->LOCATION = handle->LOCATION;

at line 710 and 811 of mfs_init.c

This seems to fix the problem for me.

Thanks

Chris

Re: Bug Report: In MQX 4.1 _io_mfs_read & _io_mfs_write do not advance the file location

LuisCasado — Wed, 17 Sep 2014 07:29:38 GMT

Hello,

Check MQX 4.1.1, I think the fix is already included.

Luis

Re: Bug Report: In MQX 4.1 _io_mfs_read & _io_mfs_write do not advance the file location

LuisCasado — Wed, 17 Sep 2014 07:34:06 GMT

Hi,

Yes, it is.

Luis

Re: Bug Report: In MQX 4.1 _io_mfs_read & _io_mfs_write do not advance the file location

danielchen — Wed, 17 Sep 2014 07:39:29 GMT

Hi Chris, thank you for sharing your solution in the community, I will reproduce it and submit a report if necessary.

Any time you think you find a bug I recommend to submit a Service Request at our web page www.freescale.com/support , technical support team can evaluate the case and report it to development team.

Have a great day,
Daniel

Re: Bug Report: In MQX 4.1 _io_mfs_read & _io_mfs_write do not advance the file location

chrissolomon — Wed, 17 Sep 2014 23:22:04 GMT

OK, good to know - I am in the process of stabilizing our product code on 4.1.0.1, I plan to do the 4.1.1 update once I have the all the product features verified and have merged back to the main development branch.

Re: Bug Report: In MQX 4.1 _io_mfs_read & _io_mfs_write do not advance the file location

chrissolomon — Thu, 18 Sep 2014 00:48:27 GMT

OK, but I'll also post it here, if I have a solution, so others having the same problem can take advantage of the patch until the issue is resolved in a subsequent release.